" The slave is not really a person ."

Exactly the same argument was used to support Slavery which is used to support abortion and that argument is " The slave is not really a person ." ----- " The unborn child is not really a person ."
The slave trade was abolished and so will abortion .   

http://www.4thought.tv/4thoughts/0138-John-Smeaton-Is-abortion-ever-justified-